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A comparative study of W, V, and Co doping in MoSe2 for high-performance flexible all-solid-state supercapacitors 高性能柔性全固态超级电容器中W、V、Co掺杂MoSe2的比较研究
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA03192C
Pewe-u Marhu and Vijeth H.
{"title":"A comparative study of W, V, and Co doping in MoSe2 for high-performance flexible all-solid-state supercapacitors","authors":"Pewe-u Marhu and Vijeth H.","doi":"10.1039/D5RA03192C","DOIUrl":"https://doi.org/10.1039/D5RA03192C","url":null,"abstract":"<p >The importance of supercapacitor electrode materials and devices undoubtedly stands out in relation to energy storage devices. Selecting a suitable electrode material is crucial for characterization and electrochemical studies. Herein, we report a one-step hydrothermal strategy for the fabrication of molybdenum diselenide (MoSe<small><sub>2</sub></small>) and 2% tungsten-, vanadium- and cobalt-doped MoSe<small><sub>2</sub></small>, along with characterization. The structural and morphological changes in the various nanocomposites were confirmed by powder X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectra. Electrochemical studies reveal significant improvement in specific capacitance, with the Co@MoSe<small><sub>2</sub></small> electrode exhibiting the highest specific capacitance of 518 F g<small><sup>−1</sup></small> at 1 A g<small><sup>−1</sup></small> over a potential window of 0.7 V in 2 M KOH electrolyte solution. The fabricated symmetric supercapacitor device (SSD) delivered a specific capacitance of 127 F g<small><sup>−1</sup></small> at 1 A g<small><sup>−1</sup></small> over a potential window of 1.4 V. It achieved a maximum energy density of 34.54 W h kg<small><sup>−1</sup></small> with a power density of 700 W kg<small><sup>−1</sup></small>. The device demonstrated excellent durability, with cycling stability of 80% even after 10 000 cycles. The results obtained are highly promising, indicating that these materials hold significant potential for commercial applications in energy storage devices.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 26830-26842"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03192c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in multimodal imaging techniques in nanomedicine: enhancing drug delivery precision 纳米医学中多模态成像技术的进展:提高给药精度
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA03255E
Vijay Mishra, Neha Kumari, Manish Vyas, Alaa A. A. Aljabali, Aditi Chattaraj and Yachana Mishra
{"title":"Advances in multimodal imaging techniques in nanomedicine: enhancing drug delivery precision","authors":"Vijay Mishra, Neha Kumari, Manish Vyas, Alaa A. A. Aljabali, Aditi Chattaraj and Yachana Mishra","doi":"10.1039/D5RA03255E","DOIUrl":"https://doi.org/10.1039/D5RA03255E","url":null,"abstract":"<p >Nanosystems that deliver drugs have revolutionized modern therapy <em>via</em> the accurate targeting and controlled release of drugs. The importance of real-time monitoring of these systems lies in the evaluation of their pharmacokinetics and biodistribution, as well as preventative treatment efficacy. Imaging methods thus gave birth to real-time monitoring, allowing visualization of nanoparticles (NPs) inside biological systems. This review introduces current imaging techniques such as optical imaging, computed tomography (CT), magnetic resonance imaging (MRI), nuclear imaging, ultrasound, and finally, hybrid techniques that are on the verge of being used. The principles, merits, demerits, and applications of each modality in tracking nanodrug delivery are summarized. Special importance is given to multimodal imaging based on the fact that it can help to overcome the limitations of any individual imaging modality, thereby offering better insight into drug delivery. Advances in imaging probes and imaging-guided drug delivery systems are illustrated to show this transformation of imaging in nanomedicine.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27187-27209"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03255e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comparative chemical composition and main component content of various parts of Gentiana macrophylla Pall. by UPLC-Q-orbitrap MS and HPLC† 大黄龙胆不同部位化学成分及主要成分含量的比较。UPLC-Q-orbitrap MS和HPLC†测定
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA01244A
Qier Mu, Yanqiu Bai, Junni Qi and Chula Sa
{"title":"A comparative chemical composition and main component content of various parts of Gentiana macrophylla Pall. by UPLC-Q-orbitrap MS and HPLC†","authors":"Qier Mu, Yanqiu Bai, Junni Qi and Chula Sa","doi":"10.1039/D5RA01244A","DOIUrl":"https://doi.org/10.1039/D5RA01244A","url":null,"abstract":"<p >In traditional Chinese and Mongolian medicine, the roots and flowers of <em>Gentiana macrophylla</em> Pall. (<em>G. macrophylla</em>) were used as medicinal parts. Yet, no systematic study on the chemical composition and content of the various medicinal parts of <em>G. macrophylla</em> has been reported. Therefore, the aim of this study was to evaluate the different medicinal parts of <em>G. macrophylla</em>, through to discuss the its chemical structure and content. Liquid chromatography coupled to electrostatic orbitrap high-resolution mass spectrometry (UPLC-Q-orbitrap-MS) combined with characteristic chromatogram, and high performance liquid chromatography (HPLC) to analyze the chemical composition and content of the various medicinal parts of <em>G. macrophylla</em>, and to compare them. A total of 50 compounds were identified from <em>G. macrophylla</em>, and identify 7 characteristic components were screened, including iridoids (loganic acid, swertiamarin, gentiopicroside, and sweroside), flavonoids (isoorientin and vitexin), and triterpenoids (roburic acid). The contents of iridoids and triterpenoids were higher in roots, and the contents of flavonoids were higher in flowers, stems and leaves. Thus, we can proved that iridoids and triterpenoids represented by loganic acid, swertiamarin, gentiopicroside, sweroside, and roburic acid are important quality markers of <em>G. macrophylla</em> roots. Also, the flavonoids represented by vitexin and isoorientin can be used as important quality markers for the flowers, stems, and leaves of <em>G. macrophylla</em>. And after a comprehensive analysis, we believe that <em>G. macrophylla</em>, as a medicinal plant, its roots, flowers, leaves and stems can be parts with medicinal value, which can be further developed and researched.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27096-27112"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra01244a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facile preparation of Fe3O4/HAP/Ag nanomaterial and photocatalytic degradation of four types of dyes with mechanism† Fe3O4/HAP/Ag纳米材料的制备及其光催化降解四种染料的机理
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA03777H
Rui Wu, Yulin Wang, Junhong Wang, Guanghui Tian, Yapeng Li and Cunfang Liu
{"title":"Facile preparation of Fe3O4/HAP/Ag nanomaterial and photocatalytic degradation of four types of dyes with mechanism†","authors":"Rui Wu, Yulin Wang, Junhong Wang, Guanghui Tian, Yapeng Li and Cunfang Liu","doi":"10.1039/D5RA03777H","DOIUrl":"https://doi.org/10.1039/D5RA03777H","url":null,"abstract":"<p >The present study involved the facile and green preparation of Fe<small><sub>3</sub></small>O<small><sub>4</sub></small>/HAP/Ag (HAP:hydroxyapatite) nanocomposites as catalyst, and followed by comprehensive investigation of their photocatalytic degradation four types of dyes. The photocatalytic degradation of sunset yellow, eosin, allure red and sudan red III dyes under illuminated circumstances were conducted. The structure and morphology of the catalyst was characterized and analyzed by advanced analytical techniques, such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), mapping and X-ray photoelectron spectroscopy (XPS). The photocatalytic performance of the catalysts were evaluated in detail. The influence of various parameters, including the dosage of catalyst and peroxymonosulfate (PMS) and pH were further examined. The photoelectrochemical studies including cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and diffuse reflectance spectroscopy (DRS), scavenger analysis were discussed. The findings indicated that the Fe<small><sub>3</sub></small>O<small><sub>4</sub></small>/HAP/Ag composites demonstrated remarkable capabilities for pollutant removal through photocatalysis, with the degradation rates of 95.6%, 99.5%, 98.4% and 88.6% for sunset yellow, eosin, allure red and sudan red III, respectively. The degradation mechanisms were proposed in detail. The current study provide reference perspective for design of materials for photocatalysis system and wastewater remediation.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27128-27138"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03777h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamics of ferro fluid droplet impact on hydrophobic mesh surface 铁液滴撞击疏水网格表面的动力学研究
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA02833G
Bekir Sami Yilbas, Ghassan Hassan, Abdullah Al-Sharafi, Abba Abdulhamid Abubakar and Hussain Al-Qahtani
{"title":"Dynamics of ferro fluid droplet impact on hydrophobic mesh surface","authors":"Bekir Sami Yilbas, Ghassan Hassan, Abdullah Al-Sharafi, Abba Abdulhamid Abubakar and Hussain Al-Qahtani","doi":"10.1039/D5RA02833G","DOIUrl":"https://doi.org/10.1039/D5RA02833G","url":null,"abstract":"<p >Droplet impact has been of interest in various fields extending from environmental science to engineering fields and understanding droplet behavior becomes critical in exploring processes like erosion, painting, oil–water separation, and heat transfer. Droplet impact behaviour can be altered by external influences such as ultrasonic excitations, magnetic fields, thermal radiation, and similar. In the present study, impact dynamics of water-ferro particles mixed droplet over hydrophobic mesh surfaces under magnetic influence are investigated and dynamic characteristics are assessed for various ferro-particles concentrations and mesh sizes. Droplet restitution, rebound, implement, and newborn droplet properties are analysed and explored experimentally. It is demonstrated that Weber number, mesh size and ferro particle concentration in droplet fluid have significant effect on the droplet behaviour over hydrophobic mesh. Increasing Weber number (We &gt; 12) lowers the restitution coefficient, which becomes notable for large mesh aspect ratios. Droplet contact duration on mesh surface reduces with increasing Weber number while it reduces with ferro-particle concentrations. Volume of droplet fluid penetration enhances with ferro particle concentration and Weber number. Similarly, number of fragments of penetrated fluid increases with particle concentration and Weber number demonstrating the strong magnetic influence on the mechanism of droplet fluid fragmentation.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27167-27176"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra02833g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analcime zeolite synthesis from the bottom ash of co-incinerated industrial hazardous and medical waste for tetracycline removal from wastewater 用共烧工业危险废物和医疗废物底灰合成安钙沸石去除废水中的四环素
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA01328C
Anhong Li, Ping Li, Xiaolin Yue, Zehua Huang, Jing Zhang, Wenyuan Tan and Dong Yuan
{"title":"Analcime zeolite synthesis from the bottom ash of co-incinerated industrial hazardous and medical waste for tetracycline removal from wastewater","authors":"Anhong Li, Ping Li, Xiaolin Yue, Zehua Huang, Jing Zhang, Wenyuan Tan and Dong Yuan","doi":"10.1039/D5RA01328C","DOIUrl":"https://doi.org/10.1039/D5RA01328C","url":null,"abstract":"<p >Bottom ash (BA) produced from the centralized incineration of industrial hazardous waste and medical waste is a hazardous solid waste. Therefore, although challenging, it is necessary to develop recycling technologies that can convert BA into useful products. In this study, we developed a method for the preparation of analcime zeolite (ANA) <em>via</em> a BA acid leaching–melting–hydrothermal method. Unlike the existing method that involves using fly ash <em>via</em> a hydrothermal technology to synthesize mixed zeolites, such as NaPI zeolite (NaAl<small><sub>6</sub></small>Si<small><sub>10</sub></small>O<small><sub>12</sub></small>·12H<small><sub>2</sub></small>O), tobermorite (Ca<small><sub>5</sub></small>Si<small><sub>6</sub></small>(OH)<small><sub>2</sub></small>O<small><sub>16</sub></small>·4H<small><sub>2</sub></small>O), sodalite (Na<small><sub>4</sub></small>Al<small><sub>3</sub></small>Si<small><sub>3</sub></small>O<small><sub>12</sub></small>Cl) and ANA (NaAlSi<small><sub>2</sub></small>O<small><sub>6</sub></small>·H<small><sub>2</sub></small>O), the acid leaching–melting–hydrothermal method was used to synthesize pure ANA. ANA has application potential in the adsorption of wastewater pollutants. Herein, the synthesized ANA was used as an adsorbent to adsorb tetracycline (TC), ciprofloxacin (CIP), norfloxacin (NOR) and enrofloxacin (ENR) in water. Results of this study showed that ANA with a low impurity content could be synthesized using BA as the starting material. The adsorption capacities of ANA for TC, CIP, NOR and ENR were 134.2 mg g<small><sup>−1</sup></small>, 64.3 mg g<small><sup>−1</sup></small>, 56.5 mg g<small><sup>−1</sup></small> and 43.8 mg g<small><sup>−1</sup></small>, respectively. The adsorption process of TC by ANA was studied. It was found that the optimal conditions were an adsorbent dose of 0.4 g L<small><sup>−1</sup></small>, pH = 7, and a contact time of 300 min. The maximum adsorption capacity was 936.86 mg g<small><sup>−1</sup></small>, which was much higher than the adsorption capacity of the existing zeolite for TC. The kinetic and isotherm fitting data showed that the adsorption of TC on ANA mainly involved monolayer chemical adsorption, and the process was more in line with the pseudo-second-order kinetic model and the Langmuir isotherm adsorption model. These results confirm that ANA is an efficient and economical TC adsorbent.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27076-27083"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra01328c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-line monitoring of resorcinol–formaldehyde gelation using fiber optic UV-vis spectroscopy in real time: part I† 使用光纤紫外-可见光谱实时在线监测间苯二酚-甲醛凝胶化:第一部分†
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA03988F
Seeni Meera Kamal Mohamed, Kavita Möllmann, Charlotte Heinrich, Marina Schwan and Barbara Milow
{"title":"In-line monitoring of resorcinol–formaldehyde gelation using fiber optic UV-vis spectroscopy in real time: part I†","authors":"Seeni Meera Kamal Mohamed, Kavita Möllmann, Charlotte Heinrich, Marina Schwan and Barbara Milow","doi":"10.1039/D5RA03988F","DOIUrl":"https://doi.org/10.1039/D5RA03988F","url":null,"abstract":"<p >The sol–gel transition of resorcinol–formaldehyde (RF) solutions in the presence of sodium carbonate as a catalyst was monitored using in-line UV-vis measurements in real time by observing the absorbance changes at various gelation temperatures using a fiber-optic probe. The two absorbance maxima at around 340–400 and 500 nm were caused by different resorcinol derivatives and <em>O</em>-quinone methide intermediates, respectively, which were formed during the gelation. The absorbance was measured until visible turbidity appeared. The turbidity time (<em>t</em><small><sub>turb</sub></small>) was determined, and it was found to decrease with increasing gelation temperatures. The general absorbance behaviour and the trend in absorbance value variations in correlation with time and at three different wavelengths (460, 485 and 510 nm) were studied for different gelation temperatures, and the observed correlation was presented and discussed for each temperature. The research method developed in this investigation helps in understanding and optimizing the synthesis process of RF aerogels on a laboratory scale. A simple transfer to process monitoring in industrial production seems possible.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27084-27095"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03988f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of combined UV-tensile aging on structural and electrical properties of high temperature vulcanized silicone rubber in composite insulators uv -拉伸复合老化对复合绝缘子中高温硫化硅橡胶结构和电性能的影响
IF 4.6 3区 化学
RSC Advances Pub Date : 2025-07-30 DOI: 10.1039/D5RA03926F
Shiyin Zeng, Wendong Li, Wuji He, Yuelin Liu, Xinyi Yan, Ming Lu, Chao Gao and Guanjun Zhang
{"title":"Effects of combined UV-tensile aging on structural and electrical properties of high temperature vulcanized silicone rubber in composite insulators","authors":"Shiyin Zeng, Wendong Li, Wuji He, Yuelin Liu, Xinyi Yan, Ming Lu, Chao Gao and Guanjun Zhang","doi":"10.1039/D5RA03926F","DOIUrl":"https://doi.org/10.1039/D5RA03926F","url":null,"abstract":"<p >High-temperature vulcanized silicone rubber (HTV-SR) in composite insulators undergoes performance degradation under prolonged ultraviolet (UV) exposure and mechanical stress in plateau environments, posing risks to power grid reliability. To investigate the aging behavior and mechanism of HTV-SR under coupled UV and tensile stress conditions, accelerated aging tests are conducted for 500 hours under constant UV irradiation combined with varying tensile stresses. Surface morphology, structure, mechanical and electrical properties of HTV-SR samples before and after aging are systematically characterized to analyze the synergistic and competitive effects of UV and tensile aging. The results show that UV irradiation induces chain scission and oxidative crosslink, increasing surface crosslink density while deteriorating the mechanical and electrical performance. In contrast, tensile stress alone causes minor structural disturbances due to the inherent elasticity of the material, with limited impact on electrical properties. Under combined aging, tensile stress reduces the effective surface crosslink density and inhibits UV-induced oxidative crosslink. As the tensile ratio increases, molecular chains exhibit more pronounced stress relaxation and filler debonding, further accelerating UV-induced structural and electrical degradation. This study provides theoretical support for the weathering assessment of composite insulators and highlights the importance of maintaining an appropriate crosslink density of HTV-SR to enhance structural and electrical stability in service environments.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27177-27186"},"PeriodicalIF":4.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03926f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic, theoretical, and experimental study of the interaction of a tri-heterometallic polymer with bovine liver catalase† 三异金属聚合物与牛肝过氧化氢酶†相互作用的协同,理论和实验研究
IF 3.9 3区 化学
RSC Advances Pub Date : 2025-07-29 DOI: 10.1039/D5RA02826D
Narges Lashkarzade, Fereshteh Shiri, Somaye Shahraki, Zohreh Razmara and Mostafa Heidari Majd
{"title":"Synergistic, theoretical, and experimental study of the interaction of a tri-heterometallic polymer with bovine liver catalase†","authors":"Narges Lashkarzade, Fereshteh Shiri, Somaye Shahraki, Zohreh Razmara and Mostafa Heidari Majd","doi":"10.1039/D5RA02826D","DOIUrl":"https://doi.org/10.1039/D5RA02826D","url":null,"abstract":"<p >Reactive oxygen species (ROS) modulate redox balance and cellular processes such as proliferation, angiogenesis, metabolism, immune modulation, and metastasis. Metal-based polymeric complexes have shown potential in disrupting oxidative pathways relevant to tumor development. A comprehensive investigation was conducted on the interaction between a Cu/Mn/Na polymer and catalase, as well as its cytotoxic behavior. The compound exhibited notable antioxidant properties, achieving 61.2% inhibition of the DPPH radical at 125 μM after 60 min. Additionally, the polymer enhanced bovine liver catalase (BLC) activity by up to 138.9% at 7.7 × 10<small><sup>−6</sup></small> M, with a moderate binding constant in the range of 10<small><sup>4</sup></small> M<small><sup>−1</sup></small>. Fluorescence analyses revealed a static quenching mechanism, and molecular docking revealed hydrogen bonding and van der Waals forces to be the key stabilizing interactions. Conformational analyses demonstrated significant structural alterations in BLC upon polymer interaction. The MTT assay revealed considerable antiproliferative effects against colon carcinoma (HCT116) cells, with activity comparable with that of cisplatin at higher concentrations. Importantly, unlike cisplatin, the polymer exhibited minimal toxicity towards normal cells (NIH/3T3), suggesting its potential as an anticancer agent. These findings indicate the potential of the polymer as a redox-modulating therapeutic agent with promising anticancer properties.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 27033-27045"},"PeriodicalIF":3.9,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra02826d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Ni on the performance of Ni–Zn-NC catalysts for CO hydrogenation to DME Ni对CO加氢制二甲醚Ni - zn - nc催化剂性能的影响
IF 3.9 3区 化学
RSC Advances Pub Date : 2025-07-29 DOI: 10.1039/D5RA04740D
Chunqiu Zhao, Qiang Chang, Fu Yin, Jing Li, Guowei Niu, Hulin Wang, Dan Liu, Bhekie B. Mamba, Chenghua Zhang and Alex T. Kuvarega
{"title":"Effect of Ni on the performance of Ni–Zn-NC catalysts for CO hydrogenation to DME","authors":"Chunqiu Zhao, Qiang Chang, Fu Yin, Jing Li, Guowei Niu, Hulin Wang, Dan Liu, Bhekie B. Mamba, Chenghua Zhang and Alex T. Kuvarega","doi":"10.1039/D5RA04740D","DOIUrl":"https://doi.org/10.1039/D5RA04740D","url":null,"abstract":"<p >One-step CO hydrogenation to value-added chemicals represents a prominent yet challenging research objective for conventional catalysis processes in chemical industry. Herein, we report a rationally designed Ni-doped Zn-NC catalyst embedded within an N-doped carbon matrix for one-step CO hydrogenation to dimethyl ether (DME), demonstrating superior CO conversion compared to the pristine Zn-NC catalyst (25.9% <em>vs.</em> 20.6%) while both maintaining high DME selectivity (&gt;93%). Structural characterization revealed that Ni atoms existed in a bimetallic coordination environment, which is crucial for the promoting effect of Ni. In contrast, Ni nanoparticles incorporated into Zn-NC (nanoNi–Zn-NC) reduced CO conversion to less than 17% despite retaining high DME selectivity (&gt;92%). Besides, control catalysts containing either Ni-only or Ni/Zn nanoparticles supported on carbon support exhibited limited catalytic activity and mainly produced hydrocarbons. This work provides valuable insights into the active sites of the bimetallic Ni–Zn-NC catalysts and elucidate the structural effects of bimetallic systems for CO conversion to DME. Furthermore, this study offers a feasible framework for optimizing Zn-based bimetallic catalysts.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 33","pages":" 26950-26958"},"PeriodicalIF":3.9,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra04740d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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